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Re: Looking at the time element (again) (ISSUE-97)

From: Shane McCarron <shane@aptest.com>
Date: Thu, 10 Nov 2011 07:03:56 -0600
Message-ID: <4EBBCBBC.2080109@aptest.com>
To: public-rdfa-wg@w3.org
I see that you suggest using 'zero hour' when there is no time 
component.  As long as we use GMT for the timezone I think that is 
okay.  However, note that some timezones on some days HAVE NO zero 
hour.  When adjusting for daylight savings time, for example, Cairo goes 
from 23:59:59 to 01:00:00.  As you say - nothing with dates and times is 
easy.

On 11/10/2011 6:50 AM, Ivan Herman wrote:
> Now that<time>  seems to be back into the picture, I have looked at ISSUE-97 again[1].
>
> The issue, as raised by Stéphane, proposes to understand the '@datetime' property of the<time>  element. Essentially, if the source contains this:
>
> <time property="something" datetime="2009-05-10">May 10th 2009</time>
>
> we should, implicitly, consider this as being
>
> <time property="something" datetime="2009-05-10" content="2009-05-10">May 10th 2009</time>
>
> and then let the core RDFa processing go. That is of course easy.
>
> However... do we want to add a datatype to this? One would think so, but then we get to a very slippery slope. Which datatype? Looking at
>
> http://www.w3.org/TR/xmlschema-2/#date
>
> we do have quite a lot of possibilities... There is of course xsd:dateTime (this is what Stéphane used in his original mail for the issue). This would mean the transformation of the<time>  element into:
>
> <time property="something" datetime="2009-05-10" content="2009-05-10T00:00:00-00:00" datatype="xsd:dateTime">May 10th 2009</time>
>
> but there are a bunch of others, like gYear, gYearMonth, etc.
>
> Personally, I would propose to use xsd:dateTime only. But that has to be decided by the group.
>
> However, nothing with time is simple... If the author puts in the whole ISO format, then are of course fine. But I would expect that in the vast majority of cases the hour and minute and the others will all be missing. Is it all right to just add the 0 hour, as Stéphane did it? Again, I can live with that, but this is something to be decided and known for interoperability reasons...
>
> Minor things, but should be cast in stone:-)
>
> Ivan
>
>
>
> [1] http://www.w3.org/2010/02/rdfa/track/issues/97
>
> ----
> Ivan Herman, W3C Semantic Web Activity Lead
> Home: http://www.w3.org/People/Ivan/
> mobile: +31-641044153
> FOAF: http://www.ivan-herman.net/foaf.rdf
>
>
>
>
>
>

-- 
Shane McCarron
Managing Director, Applied Testing and Technology, Inc.
+1 763 786 8160 x120
Received on Thursday, 10 November 2011 13:04:26 GMT

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